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Finding the Fourth Proportional to 141,952.40, 212,928.60 and 120,843.80

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Solution

The fourth proportional to 141,952.40, 212,928.60 and 120,843.80 is: 181,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,952.40 : 212,928.60 = 120,843.80 : x
  2. Step 2: Convert to fraction form
    141,952.40/212,928.60 = 120,843.80/x
  3. Step 3: Cross multiply
    141,952.40x = 212,928.60 × 120,843.80
  4. Step 4: Simplify right side
    141,952.40x = 25,731,101,152.68
  5. Step 5: Solve for x
    x = 25,731,101,152.68/141,952.40
  6. Step 6: Final answer
    x = 181,265.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.